Final Flashcards
CN I
Olfactory (smell)
CN II
Optic (vision)
CN III
Oculomotor (EOM, raise eyelids, pupil constriction, lens shape)
CN IV
Trochlear (inward and downward movement of the eye)
CN V
Trigeminal (Muscles of mastication, sensation of the face and scalp, cornea, mucous membranes of mouth and nose)
CN VI
Abducens (lateral movement of the eye)
CN VII
Facial (facial muscles, close eyes, speech, taste, saliva and tear excretion)
CN VIII
Acoustic (hearing)
CN IX
Glossopharyngeal (phonation and swallowing, taste, gag reflex)
CN X
Vagus ( talking/swallowing, carotid reflex, pharynx)
CN XI
Spinal (movement of trapezius and sternomastoid muscles)
CN XII
Hypiglossal (movement of the tongue)
Causes of seizres
Cerebrovascular disease Hypoxemia of any cause Fever (childhood) HTN CNS infections Metabolic/toxic condition Drug/alcohol withdrawal Allergies
Characteristics of Grand Mal seizure (tonic clonic)
Last about 2 minutes
Aura occurs
Muscle contraction, periods of apnea (tonic)
Excessive salivation, forceful movement of extremities, rapid pulse (clonic)
Possible incontinence
Stupor 5-10 min following clonic phase
Characteristics of Petit Mal seizure (Absent seizure)
Small movement of face or eyes Staring into space Last for few seconds to a min Occur mostly in children Dulling of consciousness Usually no falling
Characteristics of Jacksonian seizure
Begins with one part of the body (twitching of one side of face of abnormal movement of one hand)
Characteristics of complex seizure
Pt exhibits altered behaviors, unusual sensation (not aware of it)
Nursing care during a seizure
- Provide privacy
- Aura occurs?
- Ease pt to floor
- Push aside furniture
- Loosen constrictive clothing
- Remove pillows/raise side rails
- Note where in the body the seizure began
- Any incontinence?
- Duration of seizure?
- Don’t attempt to pry open jaws
- Do not restrain pt
- Place pt on one side
Nursing care after a seizure
- Keep pt on side to prevent aspiration
- Pt should be reoriented
- Document event leading to and occurring before/after
- Maintain airway
What is status elipticus?
A series of generalized seizures that occur w/o full recovery of consciousness b/w attacks
Medical management of status elilepticus
- Stop the seizure as quickly as possible
- Airway and adequate O2
- IV Valium, Cerebryx given slowly
- Blood samples
- EEG
- Neuro checks
Division of the Peripheral nervous system
Autonomic (involuntary efferent)
Somatic (stimulates voluntary muscles)
Division of autonomic system
Parasympathetic (Rest and digest)
Sympathetic (Fight or flight)
Functions of the frontal lobe
Voluntary movement Personality/Mood initiative/judgement Planning Social behavior Bladder control Concentration Broca's area (motor control of speech)
Functions of the parietal lobe
Attention to stimuli Dressing Drawing Feeling shape and texture Spatial imaging Finding one's way around
Functions of occipital lobe
Interpreting vision
Functions of temporal lobe
Visual memory Facial recognition Music appreciation Hearing Mood (aggression) Non-language
Dizziness
A sensation of imbalance or movement. Can be caused by viral syndromes, hot weather, roller coaster rides, and middle ear infections
Vertigo
The illusion of movement
Normal range of ICP
10-20mm Hg
Patho of increased ICP
Cerebral bl flow decreases, which results in ischemia and cell death. A sympathetic response is activated which causes a subsequent increase in BP. The increased BP then activates the parasympathetic system via carotid artery baroreceptors resulting in a vagal induced bradycardia. (Cushings reflex)
Signs of increased ICP (Cushings triad)
Increase in BP
Bradycardia
Bradypnea
Difference between shock and Cushing’s triad
In shock there is a decrease in BP, and increase in respirations and pulse
Manifestations of worsening ICP
Changes in LOC Restlessness w/o cause Confusion, increasing drowsiness Pt may only react to only loud or painful stimuli Decorticate or decerebrate
Patho of migraines
Often hereditary, associated w/ low Mg levels in brain
Attacks can be triggered by hormonal changes associated with menstrual cycle, bright lights, stress, depression, sleep deprivation, fatigue and odors. Foods containing tyramine (aged cheese), nitrates or milk products may trigger attack.
What occurs in the aura phase of a migraine?
Lasts less than 1 hr, enough time for pt to take medication, Visual disturbances may occur, and may be hemianopic. Numbness and tingling of the lips, face or hands, mild confusion, sllight weakness of an extremity, drowsiness and dizziness may occur.
What are the 5 categories of a neuro assessment?
Consciousness and cognition Cranial nerves Motor system (muscle tone, atrophy) Sensory system (sensation, pain?) Reflexes
3 parts of the Glasgow coma scale
Eye movement
Verbal response
Motor response
A 3 in the glasgow coma scale section of motor response indicates what type of positioning?
Decorticate
A 2 in the glasgow coma scale section of motor response indicates what type of positioning?
Decerebrate
Characteristics of left hemispheric stroke
Slow cautious behavior
Aphasia (expressive, receptive or global)
Altered intellectual ability
Right visual field deficit
Paralysis or weakness on the right side of the body
Characteristics of right hemispheric stroke
Lack of awareness of deficits
Left visual field deficit
Impulsive behavior
Increased distractibility
Paralysis or weakness on the left side of the body
Spatial-perceptual deficit; trouble learning to care for themselves
Criteria for t-PA
- 18years old<
- Clinical dx of ischemic stroke
- Systolic <15sec
- Not received heparin during last 48hrs
- No prior intracranial bleed, AVM, neoplasm or procedure
- No major surgical procedures within days
- No stroke, serious head injury, or intracranial surgery within the last 3 months
- No GI or urinary bleeding within days
Characteristics of Type 1 diabetes
Body does not make insulin Autoimmune response Normal weight Glucose remains in the bl stream Production of ketones
Characteristics of of type 2 diabetes
Insulin resistance (insulin is not as effective)
Impaired insulin secretion
Obesity
More common in adults
S/S of hyperglycemia (hot and dry, blood sugar high)
Extreme thirst Frequent urination Dry skin Hunger Blurred vision Drowsiness Decreased healing
Causes of hyperglycemia
Too much food Too little insulin Illness Stress Gradual onset
S/S of hypoglycemia (cold and clammy, need some candy)
Shaking Tachycardia Sweating Dizziness Anxiety Hunger Impaired vision Weakness/fatigue HA Irritability